Card 20 / 26: Our facial and pharyngeal muscles are derived from the muscles of the embryonic gill arches. Are there any other examples?
A.)
No, there are not any other branchiomeric (gill) arch muscles.
B.)
Yes, the tensor palatini, stapedius, splenius capitis longus and the intrinsic muscles of the larynx are also branchiomeric.
C.)
Yes, the cricothyroid, muscles of mastication, tensor tympani, stapedius and the intrinsic muscles of the larynx are also branchiomeric.
Answer:
C.) Yes, the cricothyroid, muscles of mastication, tensor tympani, stapedius and the intrinsic muscles of the larynx are also branchiomeric.
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Other muscles of mastication innervated by the neurons in the motor nucleus of V are the masseter, the temporalis, and the medial pterygoid. (Also, the nerve to the mylohyoid innervates the anterior belly of the digastric and the mylohoid.)
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Ch 04: Spinal Cord General Anatomy & Brain Stem
Author:
M.D.Stephen VoronLecturer
University of Utah
USA
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